WO2014015526A1 - Method and apparatus for making back frame of flat panel display device - Google Patents

Abstract

Disclosed are a method for making a back frame of a flat panel display device and an apparatus therefor. The method comprises: delivering a strip of material to a stamping apparatus; firstly, stamping the strip of material by using the region of a mould in the stamping apparatus that corresponds to a stamping procedure of a first working station; after completing the first stamping, moving the strip of material or the mould a distance corresponding to one working station; after moving a distance corresponding to one working station, secondly, stamping the strip of material by using the region of the same mould in the same stamping apparatus that corresponds to a stamping procedure of a second stamping procedure; after completing the successive stampings of the strip of material by the same mould in the same stamping apparatus, obtaining a main splicing member and a support required for forming the back frame. In such a way, a saving can be made on the stamping apparatus and costs of the mould and material can be reduced.

Description

 Method and device for manufacturing back frame of flat panel display device

[Technical Field]

 The present invention relates to the field of display technologies, and in particular, to a method and apparatus for manufacturing a back frame of a flat panel display device.

 【Background technique】

The liquid crystal display device of the prior art includes a front frame, a panel, and a backlight module. The backlight module includes a back frame, a reflective sheet, a light guide plate, a light group, and the like.

Currently, there are a variety of display panel sizes on the market to meet the different needs of people. For example, in the field of television, the size of the liquid crystal panel includes 31.5, 42, 46, 48 or 55 inches, and it is necessary to set different back frame molds according to liquid crystal panels of different sizes.

Please refer to FIG. 1. FIG. 1 is a schematic structural diagram of a back frame of a liquid crystal display device in the prior art. As shown in FIG. 1 , in the prior art, the back frame 10 adopts an integral back frame, and the integral back frame 10 is usually produced by metal stamping or plastic injection. The integral back frame 10 needs to consume too much material. The material cost is high. In addition, the large-sized back frame 10 needs to use a large punching device, and the corresponding frame of the back frame 10 has a large size, a complicated structure, and a high cost of the back frame mold. Therefore, the back frame of the prior art is costly.

Therefore, it is necessary to design a spliced backplane, and the spliced backplane needs to be provided with a plurality of brackets to install other devices such as a circuit board of the liquid crystal display device. Since the bracket is provided with a different physical structure such as a convex hull or a same hole, the bracket is provided. The different physical structures are completed by different stamping operations of different stations and different stamping devices; in addition, different stamping processes require different stamping dies to increase the cost of the bracket mold.

 [Summary of the Invention]

The technical problem to be solved by the present invention is to provide a method and an apparatus for manufacturing a back frame of a flat panel display device, which can save the stamping device, reduce the mold cost and the material cost.

In order to solve the above technical problem, a technical solution adopted by the present invention is to provide a method for manufacturing a back frame of a flat panel display device, the method comprising: conveying a tape to a punching device; and using a corresponding first station of the die in the stamping device The area of the stamping process is first stamped on the strip to achieve the punching, through hole and flanging of the strip; after the first stamping, the distance of the strip or mold is moved by one station After moving the distance of one station, the strip is subjected to the second stamping by using the area of the stamping process of the corresponding second working station of the same stamping device in the same stamping device; the strip is sequentially punched in the same mold using the same stamping device Afterwards, the primary assembling piece or bracket required for forming the frame is obtained; at least the first and second two primary assembling pieces are spliced to form a back frame, wherein one end of the first primary assembling piece is provided with at least two stitchings And the at least two splice parts are spaced apart along the length direction of the first main splice, and the structure of each splice is adapted to the end of the corresponding second main splice , The bracket for the main pieces fixed to each other.

Wherein, when there are other joints between the stitching position of the second primary assembling piece and the adjacent end of the first primary assembling piece, a stitching portion of the at least two stitching portions and the corresponding number are selected according to the size of the back frame Before or after the step of splicing one end of the two primary assembling pieces, the other splicing portions of the first primary assembling piece located outside the splicing position of the second primary splicing piece are cut off.

The splicing portion is a recess provided on a surface of the first main splicing piece and adapted to an end of the second main splicing piece to receive one end of the second main splicing piece.

Wherein, the joint portion is a concave portion provided on a surface of the first primary assembling piece, and a surface of the second primary assembling piece is provided with a protrusion at a corresponding position, the protrusion is embedded in the concave portion to splicing the first primary assembling piece and the first Two main assembly pieces.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a method for manufacturing a back frame of a flat panel display device, the method comprising: conveying a tape to a punching device; and using a corresponding first work of the die in the punching device The area of the stamping process is the first stamping of the strip; after the first stamping is completed, the strip or the mold is moved by a station distance; after moving the distance of one station, the same stamping device is used in the same stamping device Corresponding to the pressing process of the second station, the strip is subjected to the second stamping; after the strip is sequentially punched by the same die of the same stamping device, the main assembling piece or bracket required for forming the back frame is obtained; At least a first and a second primary splicing member to form a back frame, wherein one end of the first primary splicing member is provided with at least two splicing portions, and the structure of each splicing portion is adapted to an end of the corresponding second primary splicing member The first primary assembling piece is spliced with one end of the corresponding second primary assembling piece through a joint portion thereof, and the bracket is used for fixing with the primary assembling piece.

Wherein, the step of performing the first and second stamping on the strip by the region corresponding to the stamping process of the first station and the second station of the die in the stamping device comprises: using the corresponding first station of the die in the stamping device The area of the stamping process is stamped by the convex, through and flanging of the strip.

Wherein, one end of the first primary assembling piece is provided with at least two splicing portions, and the structure of each splicing portion is matched with one end of the corresponding second primary splicing piece; at least the first and second primary splicing pieces are spliced to form a back The step of the frame includes: selecting a joint portion of the at least two joint portions of one end of the first primary assembling piece according to the size of the back frame to splicing with one end of the corresponding second primary assembling piece.

Wherein, when there are other joints between the stitching position of the second primary assembling piece and the adjacent end of the first primary assembling piece, a stitching portion of the at least two stitching portions and the corresponding number are selected according to the size of the back frame Before or after the step of splicing one end of the two primary assembling pieces, the other splicing portions of the first primary assembling piece located outside the splicing position of the second primary splicing piece are cut off.

Wherein at least two splices are arranged at intervals along the length direction of the first main splice.

The splicing portion is a recess provided on a surface of the first main splicing piece and adapted to an end of the second main splicing piece to receive one end of the second main splicing piece.

Wherein, the joint portion is a concave portion disposed on the surface of the first primary assembling piece, and the surface of the second primary assembling piece is provided with a protrusion corresponding to the surface, and the protrusion is embedded in the concave portion to splicing the first primary assembling piece and the second primary assembling piece.

Wherein, one end surface of the second primary assembling piece is provided with at least two protrusions arranged at intervals along the length direction of the second primary assembling piece.

In order to solve the above technical problem, another technical solution adopted by the present invention is to provide a device for manufacturing a back frame of a flat panel display device, the device comprising: a feeding device, a punching device and a mold; and a mold for setting In the stamping device, there are two regions corresponding to at least the first station and the second station stamping process; the feeding device is used for conveying the strip to the stamping position of the corresponding mold, and the punching device is used for the corresponding portion of the mold The first and second stamping of the strips of the first station and the second station are sequentially performed to obtain the main assembling piece or the bracket required for forming the back frame; wherein the back frame includes at least the first a second main assembling piece and a plurality of brackets, wherein one end of the first primary assembling piece is provided with at least two joints, and the structure of each joint is adapted to the end of the corresponding second primary assembling piece The first primary assembling piece is spliced with one end of the corresponding second primary assembling piece by a joint portion thereof, and the plurality of brackets and the primary assembling piece are fixed to each other.

Wherein, the mold is provided with a main pattern for forming a main assembling piece of the back frame, and the main pattern is provided with a sub-pattern for forming at least two joint portions at one end of the main assembling piece.

Wherein, different regions of the mold are provided with corresponding patterns for forming convex hulls, through holes or flanges on the main splicing piece or the bracket.

The invention has the beneficial effects that the method and the device for manufacturing the back frame of the flat panel display device of the present invention are provided with at least two primary assembling pieces, wherein at least two are provided on the first primary assembling piece, different from the prior art. a splicing portion, the first main splicing piece is spliced with one end of the corresponding second main splicing piece through a splicing portion thereof, so that the mold structure of the back frame is simple, the cost of the back frame mold is reduced, and the material of the back frame is saved, The production cost of the flat panel display device is reduced. In addition, the method for manufacturing the back frame of the flat panel display device of the present invention integrates different stamping processes of stamping to form the bracket or the main splice member into one mold in sequence, thereby saving the bracket mold and punching The mechanism stamps the brackets in order, eliminating the need to replace the mold after completing a stamping process, saving stamping equipment, and improving the production efficiency of the back frame of the flat panel display device.

 [Description of the Drawings]

1 is a schematic structural view of a back frame of a liquid crystal display device in the prior art;

2 is a schematic structural view of a flat panel display device according to a first embodiment of the present invention;

3 is a schematic structural view of a back frame of a flat panel display device according to a second embodiment of the present invention;

4 is a schematic structural view of a back frame of a flat panel display device according to a third embodiment of the present invention;

5 is a schematic structural view of a back frame of a flat panel display device according to a fourth embodiment of the present invention;

6 is a schematic structural view of a splicing manner in a flat panel display device according to a fifth embodiment of the present invention;

7 is a schematic view showing a first auxiliary splicing member diagonally disposed on a main frame in a flat panel display device according to a sixth embodiment of the present invention;

8 is a schematic diagram of a first auxiliary assembling piece and a second auxiliary assembling piece on a main frame in a flat panel display device according to a seventh embodiment of the present invention;

9 is a schematic structural view of a joint portion of a back frame of a flat panel display device according to an eighth embodiment of the present invention;

Figure 10 is a schematic cross-sectional view showing the first embodiment of the joint portion of Figure 9;

11 is a schematic view showing a splicing manner of a splicing portion of a back frame of a flat panel display device according to a ninth embodiment of the present invention;

12 is a schematic view showing a splicing manner of a splicing portion of a back frame of a flat panel display device according to a tenth embodiment of the present invention;

13 is a schematic view showing a splicing manner of a joint portion of a back frame of a flat panel display device according to an eleventh embodiment of the present invention;

14 is a schematic structural view of a joint portion of a back frame of a flat panel display device according to a twelfth embodiment of the present invention;

15 is a schematic structural view of a joint portion of a back frame of a flat panel display device according to a thirteenth embodiment of the present invention;

16 is a flow chart showing a method of manufacturing a back frame of a flat panel display device according to a fourteenth embodiment of the present invention;

17 is a schematic structural diagram of a flat panel display device with a touch screen according to a fifteenth embodiment of the present invention;

FIG. 18 is a schematic structural diagram of a stereoscopic display device according to a sixteenth embodiment of the present invention; FIG.

Figure 19 is a schematic structural view of a plasma display device according to a seventeenth embodiment of the present invention;

Figure 20 is a schematic view showing the structure of an apparatus for manufacturing a flat panel display device of the present invention.

 【detailed description】

2-3, FIG. 2 is a schematic structural view of a flat panel display device according to a first embodiment of the present invention, and FIG. 3 is a schematic structural view of a back frame of the flat panel display device according to the second embodiment of the present invention. As shown in FIG. 2 , the flat panel display device 20 of the present embodiment includes a backlight system 21 and a display panel 22 . The backlight system 21 is disposed on the back surface of the display panel 22 and provides a light source for the display panel 22 .

In the present embodiment, the backlight system 21 includes a light source 25, a light homogenizing mechanism 24, and a back frame 23. The back frame 23 carries the light source 25 and the light homogenizing mechanism 24. When the backlight system 21 is of the sidelight type, the light homogenizing mechanism 24 is a light guide plate; when the backlight system 21 is of a direct type, the light homogenizing mechanism 24 is a diffusing plate. The back frame 23 includes at least a first primary assembling piece and a second primary assembling piece, and at least the first and second primary assembling pieces form the main frame 27 of the back frame 23.

Referring to FIG. 3 together, the first embodiment of the back frame 23 includes a first primary splice 261 and a second primary splice 262. One end of the first primary assembling piece 261 is spliced with one end of the second primary assembling piece 262, and the other end of the first primary assembling piece 261 is spliced with the other end of the second primary assembling piece 262 to form the main frame 27 of the back frame 23. The first primary splicing member 261 and the second primary splicing member 262 are both aluminum or galvanized steel. In the present embodiment, the first primary assembling piece 261 and the second primary assembling piece 262 are L-shaped.

Referring to FIG. 4 together, the second embodiment of the back frame 23 includes a first primary splicing member 281, a second primary splicing member 282, and a third primary splicing member 283. The three primary assembling pieces 281, 282, and 283 are joined to form the main frame 27 of the back frame 23. The three primary splices 281, 282, and 283 are either aluminum or galvanized steel. In the present embodiment, the first primary assembling piece 281 is L-shaped, and the second and third primary assembling pieces 282, 283 are all straight.

In addition, the back frame 23 may further include a secondary splicing piece disposed in the splicing frame 27 and spliced thereto.

The back frame 23 of the flat panel display device 20 of the present invention will be described in detail below with four primary splicing members and two secondary splicing members.

Referring to FIG. 5, FIG. 5 is a schematic structural diagram of a back frame of a flat panel display device according to a fourth embodiment of the present invention. As shown in FIG. 5 , in the present embodiment, the back frame 23 includes: a first primary assembling piece 231 , a second primary assembling piece 232 , a third primary assembling piece 233 , a fourth primary assembling piece 234 , and a first auxiliary assembling piece 235 . The second auxiliary assembling piece 236 and the brackets 2371, 2372, 2373, 2374, 2375, 2376 and 2377. The first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 are formed into a rectangular main frame 27 of the back frame 23 by end-to-end stitching. The first auxiliary splicing piece 235 and the second auxiliary splicing piece 236 are provided as auxiliary splicing pieces, are disposed in the main frame 27, and are spliced with the main frame 27.

Specifically, one end of the first primary assembling piece 231 is spliced with one end of the second primary assembling piece 232, and the other end of the second primary assembling piece 232 is spliced with one end of the third primary assembling piece 233, and the third primary assembling piece 233 is The other end is spliced with one end of the fourth primary assembling piece 234, and the other end of the fourth primary assembling piece 234 is spliced with the other end of the first primary assembling piece 231 to form a rectangular main frame 27. The first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233 and the fourth primary assembling piece 234 are all aluminum parts or galvanized steel pieces. In this embodiment, the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 are all straight strips. In other embodiments, those skilled in the art completely The first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234 may all be disposed in an L shape, or partially disposed in a straight strip shape, and the remaining ones are disposed in an L shape. For example, in FIG. 3, the first primary assembling piece 261 and the second primary assembling piece 262 are all disposed in an L shape; in FIG. 4, the first primary assembling piece 281 is disposed in an L shape, and the second and third primary assembling pieces 282 are provided. And 283 is set to a straight strip.

In the present embodiment, the back frame 23 of the flat panel display device 20 is spliced and fixed by using a splicing connection method. As shown in FIG. 6 , one end of the first primary assembling piece 231 and one end of the second primary assembling piece 232 are spliced and connected, and one end of the second primary assembling piece 232 is spliced on one end of the first primary assembling piece 231 . For example, one end of the second primary assembling piece 232 is spliced on one end of the first primary assembling piece 231 by means of screwing, fastening or welding.

In the present embodiment, the first secondary assembling piece 235 and the second secondary assembling piece 236 are disposed in the main frame 27 of the back frame 23 . One end of the first auxiliary assembling piece 235 is spliced with the first primary assembling piece 231, the other end of the first auxiliary assembling piece 235 is spliced with the third primary assembling piece 233, and one end of the second auxiliary assembling piece 236 and the first primary assembling piece 231 The other end of the second auxiliary assembling piece 236 is spliced with the third primary assembling piece 233, and between the second primary assembling piece 232, the fourth primary assembling piece 234, the first auxiliary assembling piece 235, and the second auxiliary assembling piece 236. Parallel settings. In other embodiments, one of ordinary skill in the art provides at least one secondary splice within the main frame 27, such as only the first secondary splice 235 disposed within the main frame 27. In addition, the two ends of the first auxiliary assembling piece 235 can be respectively spliced with at least two primary assembling pieces of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234. For example, the first sub-assembler 235 is diagonally disposed in the main frame 27 as shown in FIG. Similarly, the two ends of the second auxiliary assembling piece 236 may be respectively combined with at least two of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, and the fourth primary assembling piece 234. Splicing pieces are spliced. For example, the two ends of the first auxiliary assembling piece 235 are respectively spliced with the adjacent first primary assembling piece 231 and the second primary assembling piece 232, and the two ends of the second auxiliary assembling piece 236 are respectively disposed adjacent to the third main assembly. The splicing member 233 and the fourth main splicing member 234 are spliced, as shown in FIG.

In the present embodiment, the back frame 23 includes seven brackets 2371, 2372, 2373, 2374, 2375, 2376, and 2377. The bracket 2371 is fixed on the fourth primary assembling piece 234, the brackets 2372 and 2373 are respectively fixed on the first auxiliary assembling piece 235, the bracket 2374 is fixed on the second auxiliary assembling piece 236, and the bracket 2375 is fixed on the second primary assembling piece. At 232, the two ends of the brackets 2376 and 2377 are respectively fixed to the first auxiliary assembling piece 235 and the second auxiliary assembling piece 236. In fact, the bracket may be fixed to one of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, the fourth primary assembling piece 234, the first auxiliary assembling piece 235, and the second auxiliary assembling piece 236. or above. In other embodiments, those skilled in the art can fully provide other numbers of brackets on the back frame 23, such as a bracket or more. In addition, the bracket can be detachably fixed to one of the first primary assembling piece 231, the second primary assembling piece 232, the third primary assembling piece 233, the fourth primary assembling piece 234, the first auxiliary assembling piece 235, and the second auxiliary assembling piece 236. or above.

A convex package (not shown) is disposed on the brackets 2371, 2372, 2373, 2374, 2375, 2376, and 2377, and the back frame 23 can fix the circuit board or the like through the convex package.

The corresponding mold of the above-mentioned back frame 23 will be further described below. In the present embodiment, the first primary assembling piece 231 and the third primary assembling piece 233 are the same in size, the same shape, and are stamped using the same mold. The second primary assembling piece 232, the fourth primary assembling piece 234, the first auxiliary assembling piece 235 and the second auxiliary assembling piece 236 have the same size and the same shape, and are stamped and produced by the same die to realize mold sharing. Therefore, the back frame 23 of the present invention can be produced by stamping using two small-sized molds. Compared with the prior art, the back frame 10 requires a large-sized mold, and the mold structure of the back frame 23 of the present invention is simple and small, thereby reducing The cost of the back frame 23 mold. In addition, the back frame 23 of the present invention can greatly save material compared to the overall back frame of the back frame 10 in the prior art, thereby reducing the production cost of the flat panel display device 20.

Referring to FIG. 9, FIG. 9 is a schematic structural diagram of a joint portion of a back frame of a flat panel display device according to an eighth embodiment of the present invention. As shown in FIG. 9 , in the embodiment, one end of the first primary assembling piece is provided with two splicing portions, and the structure of the splicing portion is matched with one end of the corresponding second main splicing portion, so that the first primary assembling piece is Stitching with one end of the corresponding second primary assembling piece.

Specifically, one end of the first primary assembling piece 231 is provided with the splicing portions 2311, 2312, and the splicing portions 2311, 2312 are arranged along the length direction of the first primary assembling piece 231, and the splicing portions 2311, 2312 are in the first main splicing. The piece 231 is provided with a recess shaped to fit one end of the second primary assembling piece 232 to receive one end of the second primary assembling piece 232. As shown in FIG. 10, the splicing portions 2311, 2312 are recesses that do not penetrate the opposite ends of the first primary splicing member 231, the concave portion has a rectangular shape, and the second primary splicing member 232 has a straight strip shape.

When assembling the larger-sized back frame 23, the joint portion 2311 closer to the end of the first primary assembling piece 231 is first selected, and the second primary assembling piece 232 of the corresponding width is selected. Then, one end of the second primary assembling piece 232 is placed on the concave portion of the joint portion 2311. Then, one end of the second primary assembling piece 232 is spliced and fixed on the joint portion 2311 by screwing, fastening or welding. When assembling the smaller-sized back frame 23, the splicing portion 2312 that is farther from the end of the first primary splicing member 231 is first selected, and the second primary splicing member 232 of the corresponding width is selected. Then, one end of the second primary assembling piece 232 is placed on the concave portion of the joint portion 2312. Then, one end of the second primary assembling piece 232 is spliced and fixed on the joint portion 2312 by screwing, fastening or welding. Specifically, for example, a protrusion is disposed at a corresponding position on the surface of the second primary assembling piece 232, wherein the protrusion of the second primary assembling piece 232 is embedded in the corresponding position of the first primary assembling piece 231 to splicing the first primary assembling piece. 231 and the second primary assembling piece 232, as shown in FIG. In addition, one end of the second primary assembling piece 232 may be provided with at least two protrusions spaced along the length direction of the second primary assembling piece 232, such as two, three or four or the like.

Further, the concave portion of the first primary assembling piece 231 is a concave portion of a multi-step structure, and the second primary assembling piece 232 is provided with a convex portion of a multi-step structure adapted to the concave portion, as shown in FIG. In addition, as shown in FIG. 13 , taking the joint portion 2311 as an example, the bottom of the concave portion of the first primary assembling piece 231 is provided with a first through hole 2313 , and the second primary assembling piece 232 is provided with a second position corresponding to the joint portion 2311 . The back frame 23 further includes a fixing member 240. The fixing member 240 passes through the first through hole 2313 and the second through hole 2321 to splicing the first primary assembling piece 231 and the second primary assembling piece 232.

As shown in Fig. 14, in another embodiment of the back frame of the flat panel display device of the present invention, the concavities of the splice portions 2311, 2312 of the first main assembling piece 231 are circular in shape. However, in other embodiments, those skilled in the art can completely set the shape of the concave portion into other polygonal shapes such as a triangle.

As shown in FIG. 15, in another embodiment of the back frame of the flat panel display device of the present invention, the splice portions 2311, 2312 are recesses penetrating through opposite sides of the first main splice member 231 such that one end of the second main splice member 232 Move on the splicing portions 2311, 2312. For example, after the end of the second primary assembling piece 232 passes through the joint portion 2312 and is spliced and fixed, the through portion can be cut off, thereby adjusting the length of the second primary assembling piece 232 as the main frame of the back frame.

In the practical application, the other end of the first primary assembling piece 231 and the two ends of the third primary assembling piece 233 are provided with two splice portions, the structure of which is the same as that of the splice portions 2311, 2312; and in the second main stitching Both ends of the member 232 and the two ends of the fourth primary assembling member 234 are correspondingly designed or not designed corresponding to different situations, such as:

1) In the first case, as shown in FIG. 10, the two ends of the second primary assembling piece 232 and the two ends of the fourth primary assembling piece 234 may not be designed any, that is, the ends are identical in structure to other parts. When the different splicing portions 2311 (2312) at one end of the first primary assembling piece 231 are selected for splicing (the other end is also processed), if the width of the back frame 23 is correspondingly changed, the corresponding second primary splicing member 232 and the fourth main splicing The length of the splicing member 234 is also selected accordingly. That is, if the splicing portion 2311 adjacent to one end of the first primary assembling piece 231 is selected for splicing, the second primary splicing member 232 and the fourth primary splicing member 234 are not cut, or the cut portion is shorter; if the selection is farther away from the first When the splicing portion 2312 at one end of the main assembling piece 231 is spliced, the second main splicing piece 232 and the fourth main splicing piece 234 are both cut, according to the distance of the splicing part from the end of the first main splicing piece 231, and the cutting is performed. The part is also longer or shorter;

2) In the second case, similar to the first case described above, as shown in FIG. 11, except that the second primary assembling piece 232 and the fourth primary assembling piece 234 are respectively differently convex with the first primary assembling piece 231 and the first The three main assembling pieces 233 cooperate to realize the change of the width of the back frame 23; likewise, if the splicing portion 2312 other than the first splicing portion 2311 closest to the end of the first main splicing piece 231 is selected for splicing, after splicing or Before splicing, the excess second primary splicing piece 232 and the fourth primary splicing piece 234 are partially cut.

The above also applies to the main frame 27 in which the back frame 23 is obtained by splicing only two L-shaped primary assembling pieces.

In summary, the first main splicing member of the back frame 23 of the present invention is provided with at least two splicing portions, and the number of splicing portions is set according to user requirements. In the embodiment, two splicing portions 2311 and 2312 are selected. description. Therefore, when setting the mold of the back frame 23, only two sets of molds, that is, the mold of the first main assembling piece and the mold of the second main assembling piece are disposed, and a plurality of splices are arranged on the first main assembling piece to be spliced. Back frame 23 of various sizes. When assembling the back frame 23, the corresponding splicing portion may be selected according to the size of the back frame 23, and the second main splicing piece is spliced on the splicing portion of the first main splicing piece through the splicing portion, and the first main splicing piece is The other splices located outside the splice location of the second primary splice are cut to obtain the back frame 23 of the desired size. Compared with the prior art, different back frame molds are provided according to different sizes of the back frame 10, and the back frame 23 of the flat panel display device of the present invention only needs to be provided with the mold of the first main assembling piece and the mold of the second main assembling piece, which is satisfied. The molds required for various sizes of products are shared, and the mold structure is simple, which can reduce the cost of the back frame mold.

The present invention also provides a mold embodiment for manufacturing a back frame of a flat panel display device, the mold of the back frame is provided with a main pattern of a main assembling piece for forming a back frame, and the main pattern is provided for forming at least one end of the main assembling piece. Sub-pattern of two splices. The primary splicing component is the first primary splicing component and the second primary splicing component, and corresponds to the above-mentioned main pattern; the splicing part is the splicing part of the first primary splicing component, corresponding to the above-mentioned sub-pattern, and details are not described herein again.

As shown in FIG. 16, the present invention further provides a method embodiment for manufacturing a back frame of a flat panel display device, the method comprising the following steps:

Step 501: conveying a strip to the stamping device;

The punching device is mainly used for applying an external force to a material such as a material tape to cause deformation according to a set shape of the mold, thereby obtaining a workpiece having a shape set by the mold.

Step 502: performing a first punching on the strip by using a region of the stamping process corresponding to the first station of the die in the stamping device;

The stamping device can only complete the stamping work of the stamping process of the corresponding station of the mold every time it is punched. The stamping process of different stations can be integrated on the mold in sequence, and the stamping device needs to complete the stamping work in sequence according to the sequence.

In the embodiment of the present invention, the strip is first stamped by the region of the stamping process corresponding to the first station of the die in the stamping device: the punching, the through hole or the flanging of the strip is performed.

Step 503: moving the belt or the mold to a working station distance after completing the first punching;

After the completion of one stamping, the mold needs to be moved to the next station of the same stamping device with respect to the stamping device, and the stamping process of the next station is performed. At the same time, the strip needs to be moved to the next station to maintain the gap with the mold. Synchronize. Of course, the manner in which the mold and the belt move into the next station is not limited to the manner described above, for example, the mold and the belt are not moved, and the punching device is moved relative to the mold so that the area of the next station is moved to the current position. The location of the mold and the strip.

Step 504: After moving the distance of one station, the strip is subjected to the second punching by using the area of the stamping process of the corresponding second working station of the same die in the same punching device;

Step 505: After the strip is completed by using the same die of the same punching device, the main assembling piece or bracket required for forming the back frame is obtained;

Step 506: splicing at least the first and second primary assembling pieces to form a back frame, wherein one end of the first primary assembling piece is provided with at least two splicing portions, and the structure of each splicing portion and the corresponding second primary splicing piece One end of the first assembling piece is spliced with one end of the corresponding second main assembling piece through a joint portion thereof, and the bracket is used for fixing with the main assembling piece. The splicing structure of the back frame is the same as the splicing structure of the back frame in the foregoing embodiment, and details are not described herein again.

In the embodiment of the present invention, the main splicing members formed by the splicing of the back frame are provided with different physical structures, and the main splicing members are also provided with different physical structures on the brackets fixed to each other to form different physics on the main splicing piece or the bracket. The structure requires different molds to be stamped in different station stamping processes, and in the embodiment of the present invention, stamping processes for forming different main structures on the main splice member or the bracket are integrated into one mold in sequence, The mold is disposed in the stamping device, and the strip is conveyed to the stamping device, and the strip is successively stamped by the pressing portion of the different working positions of the die in the stamping device, and the strip and the die are completed once per stamping. The distance is moved to the next station until the stamping process of all the stations is completed, and the main assembling piece and the bracket required for forming the back frame are obtained. In the above manner, the main splicing piece or the bracket is only used to one mold, the bracket mold is saved, and the bracket or the main splicing piece is punched out in sequence by the punching mechanism, thereby eliminating the need to replace the stamping dies after completing one stamping process, and saving The stamping device improves the production efficiency of the back frame of the flat panel display device.

As shown in FIG. 17, the flat panel display device 20 of the present invention further includes a touch screen 29 which is disposed on the light emitting surface of the display panel 22 of the flat panel display device 20. The flat panel display device 20 includes a backlight system 21 and the above-described display panel 22 . The backlight system 21 is disposed on the back surface of the display panel 22 and provides a light source for the display panel 22 .

The backlight system 21 includes a light source 25, a light homogenizing mechanism 24, and a back frame 23. The back frame 23 carries the light source 25 and the light homogenizing mechanism 24. When the backlight system 21 is of the sidelight type, the light homogenizing mechanism 24 is a light guide plate; when the backlight system 21 is of a direct type, the light homogenizing mechanism 24 is a diffusing plate. The back frame 23 includes at least a first primary assembling piece and a second primary assembling piece, and at least the first and second primary assembling pieces form the main frame 27 of the back frame 23.

Of course, the backlight system 21 can also be a structure in any of the foregoing backlight system embodiments.

It should be noted that the flat panel display device 20 of the present invention may be a liquid crystal display device or a liquid crystal television set.

The present invention also provides a stereoscopic display device 30. As shown in FIG. 18, the stereoscopic display device 30 includes a liquid crystal lens grating 31, a backlight system 32, and a display panel 33. The liquid crystal lens grating 31 is disposed on the light emitting surface of the display panel 33. The backlight system 32 is the backlight system of each of the above embodiments, such as the backlight system 32 including the back frame 23. The back frame 23 includes at least a first primary assembling piece and a second primary assembling piece, and at least the first and second primary assembling pieces form a main frame of the back frame. The backlight system 32 may also be a structure in any of the foregoing backlight system embodiments, and details are not described herein again.

The present invention also provides a plasma display device 40. As shown in FIG. 19, the plasma display device 40 includes a plasma display panel 41 and a back frame 42, and the back frame 42 is disposed on the back surface of the plasma display panel 41. The back frame 42 may be the back frame of any of the foregoing embodiments, and details are not described herein again.

In the above manner, the back frame mold of the flat panel display device, the stereoscopic display device and the plasma display device of the present invention has a simple structure, reduces the cost of the back frame mold, and saves the material of the back frame to reduce the cost of the flat panel display device.

The present invention further provides an apparatus embodiment for manufacturing a flat panel display device. Please refer to FIG. 20. FIG. 20 is a schematic structural diagram of an apparatus for manufacturing a flat panel display device according to the present invention. As shown, the apparatus 60 includes a feeding device 601, a stamping device 602, and a mold 603.

The mold 603 integrates at least a first station and a second station stamping process of at least a primary splicing piece spliced to form a back frame of the flat panel display device or a bracket fixed to the main splicing piece spliced to form a back frame of the flat panel display device The area, and the mold 603 is disposed within the stamping device 602.

The feeding device 601 conveys the tape to the punching position of the corresponding mold 603, and the punching device 602 sequentially performs the first and second times on the strip by using the corresponding first station 6031 and the second station 6032 of the die. Stamping, the main splicing pieces and brackets required for splicing to form the back frame of the flat panel display device are obtained. Wherein, after the completion of one stamping, the mold 603 needs to be moved to the next station of the same punching device 602 with respect to the punching device 602, and the stamping process of the next station is performed, and at the same time, the strip needs to be moved to the next station to Maintaining synchronization with the mold 603, of course, the manner in which the mold 603 and the belt move into the next station is not limited to the manner described above, for example, the mold 603 is held stationary and the stamping device 602 is oriented relative to the mold 603. Move so that the area of the next station moves to the position where the current mold 603 and the tape are located. In the embodiment of the present invention, the first and second stampings of the material in the stamping device 602 corresponding to the first station and the second station are performed by using the die 603 in the stamping device 602. The area of the stamping process corresponding to the first station is stamped by a convex, through or flanging of the strip.

The back frame includes at least first and second main assembling pieces and a plurality of brackets, wherein one end of the first main assembling piece is provided with at least two joint portions, and the structure of each joint portion and the corresponding second portion One end of the primary assembling piece is adapted, and the first primary assembling piece is spliced with one end of the corresponding second primary assembling piece through a joint portion thereof, and the plurality of brackets and the primary assembling piece are fixed to each other. The splicing structure of the back frame is the same as the splicing structure of the back frame in the above embodiment, and details are not described herein again.

In the embodiment of the present invention, the stamping process of different positions of the main splicing members or the different physical structures on the back frame formed by stamping is integrated into one mold 603 in sequence, and the mold 603 is placed in the punching device 602. The material device 601 transports the tape to the punching device 602, and sequentially presses the strips in the first and second stampings of the corresponding first station 6031 and the second station 6032 of the mold to obtain a flat panel display device. The main splicing pieces and brackets required for the back frame. In the above manner, the main assembling piece or the bracket only uses one mold, saves the bracket mold, and the bracket or the main assembling piece is punched out in sequence by the punching device 602, thereby eliminating the need to replace the mold after completing a stamping process, and saving The stamping device improves the production efficiency of the back frame of the flat panel display device.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformations made by the description of the invention and the drawings are directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims (15)

1. A method of manufacturing a back frame of a flat panel display device, wherein:

   Feeding the strip to the stamping device;

   Pressing the strip for the first time with the area of the stamping process corresponding to the first station of the die in the stamping device to achieve punching of the convex, through and flanging of the strip;

   After the first stamping is completed, moving the strip or mold by a distance of a station;

   After moving the distance of one of the stations, the strip is subjected to a second stamping by using a region of the stamping process of the corresponding second working station of the same mold in the same stamping device;

   After the strips are sequentially punched by the same mold of the same stamping device, the main assembling pieces or brackets required for forming the back frame are obtained;

   Splicing at least the first and second two of the primary assembling pieces to form a back frame, wherein one end of the first primary assembling piece is provided with at least two joints, and the at least two pieces are along the first The primary splicing members are spaced apart in the longitudinal direction, and the structure of each splicing portion is adapted to the end of the corresponding second primary splicing member, and the bracket is used for fixing to the primary splicing member.
2. The method according to claim 1, wherein when there are other splices between the stitching position of the second primary assembling piece and the adjacent end of the first primary assembling piece, the selection according to the size of the back frame Before or after the step of splicing one of the at least two splice portions with one end of the corresponding second main splice member, the first main splice member is located outside the splice position of the second main splice member The other splices are cut off.
3. The method according to claim 1, wherein the joint portion is a recess provided on a surface of the first primary assembling piece and adapted to an end of the second primary assembling piece to receive one end of the second primary assembling piece.
4. The method according to claim 1, wherein the joint portion is a recess provided on a surface of the first primary assembling piece, and a surface of the second primary assembling piece is provided with a protrusion at a corresponding position, and the protrusion is embedded in the concave portion. The first primary assembling piece and the second primary assembling piece are spliced.
5. A method of manufacturing a back frame of a flat panel display device, wherein:

   Feeding the strip to the stamping device;

   Pressing the strip for the first time using the area of the stamping process of the corresponding first station of the die in the stamping device;

   After the first stamping is completed, moving the strip or mold by a distance of a station;

   After moving the distance of one of the stations, the strip is subjected to a second stamping by using a region of the stamping process of the corresponding second working station of the same mold in the same stamping device;

   After the strips are sequentially punched by the same mold of the same stamping device, the main assembling pieces or brackets required for forming the back frame are obtained;

   Splicing at least the first and second two of the primary assembling pieces to form a back frame, wherein one end of the first primary assembling piece is provided with at least two joints, and the structure of each joint is corresponding to the second One end of the primary assembling piece is adapted, and the first primary assembling piece is spliced with one end of the corresponding second primary assembling piece by a joint portion thereof, and the bracket is used for fixing with the primary assembling piece.
6.  The method of claim 5 wherein:

   The step of performing the first and second stamping on the strip by the region corresponding to the stamping process of the first station and the second station of the die in the stamping device comprises: using the corresponding first of the die in the stamping device The area of the stamping process of the station is punched by the convex, through and flanging of the material.
7. The method of claim 5 wherein:

   One end of the first primary assembling piece is provided with at least two joints, and the structure of each joint is matched with one end of the corresponding second primary assembling piece;

   The step of splicing at least the first and second two primary splices to form a back frame includes:

   A splicing portion of the at least two splicing portions of one end of the first primary assembling piece is spliced with one end of the corresponding second primary assembling piece according to the size of the back frame.
8. The method of claim 7 wherein:

   Selecting a joint portion of the at least two joint portions according to a size of the back frame when there is another joint portion between the stitching position of the second primary assembling piece and the adjacent end portion of the first primary assembling piece Before or after the step of splicing with one end of the corresponding second primary splicing member, the other splicing portions of the first primary splicing member located outside the splicing position of the second primary splicing member are cut off.
9. The method of claim 5 wherein:

   The at least two splices are spaced apart along the length of the first main splice.
10. The method of claim 9 wherein:

    The joint portion is a recess provided on a surface of the first primary assembling piece and adapted to an end of the second primary assembling piece to receive one end of the second primary assembling piece.
11. The method of claim 9 wherein:

    The joint portion is a recess provided on a surface of the first primary assembling piece, and a surface of the second primary assembling piece is provided with a protrusion at a corresponding position, and the protrusion is embedded in the concave portion to splicing the first primary assembling piece and the first Two main assembly pieces.
12. The method of claim 9 wherein:

    One end surface of the second primary assembling piece is provided with at least two protrusions spaced along the length direction of the second primary assembling piece.
13. An apparatus for manufacturing a back frame of a flat panel display device, wherein:

    The device includes a feeding device, a stamping device, and a mold;

    The mold is disposed in the stamping device, and is provided with two regions corresponding to at least the first station and the second station stamping process;

    The feeding device is configured to convey the strip to a punching position of the corresponding mold, and the punching device is configured to perform the first time on the strip by using the corresponding first station and the second station stamping step of the mold. The second stamping, the main splicing piece or bracket required to form the back frame is obtained;

    The back frame includes at least first and second primary assembling pieces and a plurality of brackets, wherein one end of the first primary assembling piece is provided with at least two joints, and the structure of each joint is corresponding to One end of the second primary assembling piece is adapted, and the first primary assembling piece is spliced with one end of the corresponding second primary assembling piece by a joint portion thereof, and the plurality of brackets and the primary assembling piece are mutually fixed.
14. The device of claim 13 wherein:

    The mold is provided with a main pattern for forming a main splicing piece of the back frame, and the main pattern is provided with a sub-pattern for forming at least two splicing portions at one end of the main splicing piece.
15. The device of claim 14 wherein:

    Different regions of the mold are provided with corresponding patterns for forming convex hulls, through holes or flanges on the primary splicing member or bracket.

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